6 Cybersecurity Tips for Developing a Crypto iOS App
Building a cryptocurrency application for iOS today is fundamentally different from shipping a regular fintech product. The stakes are existential. A …
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iOS 26 SDK Is Now Mandatory — Here Is What Actually Changes for Your App
Starting April 28, 2026, Apple will reject any app or update submitted to App Store Connect unless it is built with the iOS 26 SDK. If you have not mi…
Mobile Test Automation Frameworks in 2026: How to Choose
There are more mobile testing frameworks available in 2026 than ever before and picking the wrong one costs you months. Not in licensing fees, but in …
How we scaled to 1.3 MILLION Session Replays
Rejourney.co has scaled to over 1.3 MILLION session replays from app developers over the world. Rejourney is an alternative to sentry.io and posthog.c…
How to Run a Private AI Assistant on Your Phone in 2026 (Offline, No Account, No Filters)
Your phone's processor can run a 7-billion-parameter language model. It can generate images with Stable Diffusion. It can execute Python scripts and r…
How to add Apple Game Center leaderboards to an Expo app
I shipped my indie game Chromatch with Apple Game Center leaderboards earlier this week. My first submit got approved with the binary alone and my 6 l…
How I built a free-forever iOS travel app with no backend, no analytics, and no ads (as a self-taught dev)
No backend, no analytics, no paid tier, and the story of accidentally becoming a developer while building an app for Kyoto's under-visited 80%. Hi Dev…
Rescuing EXIF GPS from iPhone 17 HEIC, in a browser-only app
My wife teaches outdoor-nature classes in Taipei and drops photos into TrailPaint , a small browser-only tool I built so she could make trail maps for…
Building "Guide": An iOS App for Crisis Response
The Mission When an emergency hits a hotel, the biggest enemy is fragmented information. My goal with Guide was to create a reliable, minimalist tool …
Yotei - Highly modular & customizable SwiftUI calendar
I built a calendar package for iOS that focuses on modularity, customization, and performance. GitHub: https://github.com/claustrofob/Yotei Why I buil…
Our SwiftUI snapshot tests passed locally but failed on CI. Here's the actual fix.
500+ snapshot tests, all green on every developer's Mac, all red on GitHub Actions. Sound familiar? The common advice is "record your reference images…
I Built a Dead Simple App Because Claude Code Couldn't Hear Me
I use Claude Code through Bedrock at work. That version doesn't give the AI access to your microphone, so the voice input that makes the native Claude…
Unique Identifiers in Android and iOS: ANDROID_ID, UUID, and Other Strategies
In mobile app development, it is common to need a unique identifier that consistently recognizes each device — whether for analytics, personalization,…
On-Device ML iOS: Why Apple's Foundation Models Change Everything
Over 2.8 billion iOS devices now have the computational power to run language models locally — yet most developers are still sending user data to exte…
On web rendering, layers and compositing.
How a simple task led me to encounter compatibility issues with how different browsers create layers and composite those layers while they’re being an…
Your iOS App Needs a Privacy Policy. Here's How to Get One in 60 Seconds.
Most solo iOS developers treat the privacy policy like a tax return. You know you need it. You keep putting it off. And then App Store review comes ba…
React Native Exports 2,826 Symbols. Your App Needs 45.
How a missing compiler flag adds megabytes of dead code to every React Native Android app — confirmed on Mattermost, Coinbase, and Discord I've been d…
I Built Nourly — A Simple Calorie Tracking App Powered by Apple Intelligence
I recently launched Nourly, a calorie tracking app designed to make logging food as simple as possible. Most calorie apps are overloaded with features…
Cross-Account AWS Visibility at Scale: Lessons from Building a Mobile-First Health and Cost Monitoring Platform
Managing AWS environments across multiple accounts introduces a visibility problem that the console alone doesn't solve well. Cost anomalies accumulat…